NHTSA Campaign Id 91V033000; Date: Feb. 20, 1991
Trucks left with park brakes engaged could begin to rollafter the disk brakes cooled, and could result in a vehicle crash withoutwarning.
1989 Volvo Wxlm; 1990 Volvo Wxlm
Component: Parking Brake:driveline:air
Manufactured by: Volvo Gm Heavy Truck Corp
Affected Units:: 31
Improper park brake control valves may have been installed; the suspect vehicle have disk brakes with park brake valve designed for drum brakes.
Replace control valve with the correct disk brake valve.
System: parking brake control valves. Vehicle description: heavy trucks.
Date Owners notified by Manufacturer: Feb 19, 1991
Also see: